PRINCIPLES OF CHAOS ENGINEERING Last Update: 2015 September Chaos Engineering is the discipline of experimenting on a distributed system in order to build confidence in the system’s capability to withstand turbulent conditions in production. Advances in large-scale, distributed software systems are changing the game for software engineering.  As an industry, we are quick to adopt practices that increase flexibility of development and velocity of deployment.  An urgent question follows on the heels of these benefits: How much confidence we can have in the complex systems that we put into production? Even when all of the individual services in a distributed system are functioning properly, the interactions between those services can cause unpredictable outcomes.  Unpredictable outcomes, compounded by rare but disruptive real-world events that affect production environments, make t...